Between these two cups, there is supposed to be a bearing ball. On two identical machines, it was discovered that this ball is missing, causing the two cups to rub, make noise, drag and wear. Removing the platter can easily pull the ball from the well, fall off and never be found again. This bsll is very important for proper platter function.
When the ball is lost, it's obvious. The platter height will drop and possibly rub. Instead of replacing the ball, technicians will generally raise the adjuster screw in the bottom of the well, raising the platter. It will work, but it's not correct and will eventually cause permanent damage, among other things.
To make it right, purchase a 1/32" baearing ball, clean the shaft and well of old grease and relubricate with good quality oil. Place a dab of white grease in the platter cup, insert the bearing ball and place the platter in the well. The white grease will hold the bearing while replacing the platter.
This particular bearing ball most likely will not be found at ACE Hardware, but are plentiful on Ebay. 100 for around $5. A lifetime supply.
Note: If you purchased the replacement idler wheel from Victory Glass, the rubber thickness is twice the thickness of the original. The wheel works fine, but you will need to use a 1/32" bearing ball to ensure the entire wheel is in contact with the inner rim of the platter.
Opinions, opinions, opinions....The fact is, before the ball was placed, the platter had a grinding sound and when spun by hand, turned a couple rotations. After the ball was placed, the platter runs completely quiet and when spun by hand, turns for about six seconds before stopping.
The mathematical formula for this project:
Two cups = 1 bearing ball
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